LAMINATE ABSORBENT CORE FOR USE IN ABSORBENT ARTICLES

摘要

The invention relates to absorbent cores having high amounts of superabsorbent polymer material which are immobilized by adhesive. The absorbent cores have reduced peak force when subjected to the Laminate Compression Extension Test Method and also exhibit reduced delamination upon swelling of the superabsorbent polymer material.

主权项

1. A laminate absorbent core comprising a first laminate layer comprising a first substrate layer and superabsorbent polymer particles forming multiple stripes on the first substrate layer and a second laminate layer comprising a second substrate layer and superabsorbent polymer particles forming multiple stripes on the second substrate layer wherein a first adhesive is at least applied between the first laminate layer and the second laminate layer and the superabsorbent polymer particles are immobilized by the-first adhesive,
wherein the stripes of the superabsorbent polymer particles on both the first substrate layer and the second substrate layer are spaced apart from each other to form gaps that are substantially free of superabsorbent polymer particles, wherein the first laminate layer and the second laminate layer are positioned on each other such that a gap in the first laminate layer is at least in partial contact with a gap in the second laminate layer and the gaps in the first and second laminate layers are substantially free of superabsorbent polymer material, the superabsorbent polymer particles making up more than 90% by weight of the total amount of material comprised between the first substrate layer and the second substrate layer, wherein the laminate absorbent core has a peak swelling restriction pressure from 50 N/m2 to 400 N/m2, a swelling restriction pressure at 20 mm of more than 30 N/m2, and a ratio of peak swelling restriction pressure to swelling restriction pressure at 20 mm of from 1 to 10.